title: Anterior segment optical coherence tomography and ultrasound biomicroscopy in the imaging of anterior segment tumors.
abstract: OBJECTIVE
  To evaluate the utility of anterior segment optical coherence tomography (OCT) in the imaging of anterior segment tumors and compare the images to ultrasound biomicroscopy (UBM).
  
  
  METHODS
  Prospective observational case series.
  
  
  METHODS
  Eighteen eyes of 18 patients with anterior segment tumors were evaluated at Princess Margaret Hospital. The evaluation included clinical examination, clinical photography, anterior segment OCT, and UBM. Comparison of images obtained by both methods was done.
  
  
  RESULTS
  Anterior segment OCT imaged small hypopigmented tumors with complete penetration. Cysts were incompletely imaged behind the iris pigment epithelium. Highly pigmented tumors, large tumors, and ciliary body tumors were incompletely penetrated. Even without complete penetration it was possible to differentiate cystic lesions from solid lesions. UBM penetrated all tumors completely.
  
  
  CONCLUSIONS
  Anterior segment OCT can penetrate small hypopigmented tumors and supply some information on internal characteristics of other tumors. UBM is preferable for clinical anterior tumor assessment and follow-up because of its superior ability to penetrate large tumors, highly pigmented tumors, and ciliary body tumors.
authors.affiliation: Department of Ocular Oncology, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, Canada. cpavlin@rogers.com
authors.forename: Charles J
authors.initials: CJ
authors.lastname: Pavlin
authors.forename: Luz María
authors.initials: LM
authors.lastname: Vásquez
authors.forename: Richard
authors.initials: R
authors.lastname: Lee
authors.forename: E Rand
authors.initials: ER
authors.lastname: Simpson
authors.forename: Iqbal Ike K
authors.initials: II
authors.lastname: Ahmed
mesh_terms: D000869:Anterior Eye Segment / Q000000981:diagnostic imaging / Q000473:pathology; D002924:Ciliary Body / Q000000981:diagnostic imaging / Q000473:pathology*; D003560:Cysts / Q000175:diagnosis / Q000000981:diagnostic imaging; D003941:Diagnostic Techniques, Ophthalmological; D006801:Humans; D007499:Iris Diseases / Q000175:diagnosis / Q000000981:diagnostic imaging; D015811:Iris Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D033401:Microscopy, Acoustic / Q000379:methods*; D011446:Prospective Studies; D041623:Tomography, Optical Coherence / Q000379:methods*; D014603:Uveal Diseases / Q000175:diagnosis / Q000000981:diagnostic imaging; D014604:Uveal Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging